Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet chu can snippets" » "viet chau can snippets", "viet cho can snippets", "viet cau can snippets", "viet chu chan snippets", "viet chuc can snippets", "viet chu han snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("viet chu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet chu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet chu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet chu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.